Revert of Revert of Revert of Force DM rebuild. (https://codereview.chromium.org/402663003/)

Reason for revert:
we have to go deeper

Original issue's description:
> Revert of Revert of Force DM rebuild. (https://codereview.chromium.org/399123002/)
>
> Reason for revert:
> jkl;
>
> Original issue's description:
> > Revert of Force DM rebuild. (https://codereview.chromium.org/400723002/)
> >
> > Reason for revert:
> > asdf
> >
> > Original issue's description:
> > > Force DM rebuild.
> > >
> > > BUG=skia:
> > >
> > > Committed: https://skia.googlesource.com/skia/+/8a10de1
> >
> > TBR=mtklein@chromium.org
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=skia:
> >
> > Committed: https://skia.googlesource.com/skia/+/f42e08c12533f2a165bc08451f5ab5dd1363618b
>
> TBR=mtklein@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/41f30cd87ece55971b17e4a59873cf31100ee1a0

R=mtklein@chromium.org
TBR=mtklein@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/397293004
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 2a5ae54..c71450c 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -1,6 +1,5 @@
 // Main binary for DM.
 // For a high-level overview, please see dm/README.
-//
 
 #include "CrashHandler.h"
 #include "SkCommandLineFlags.h"